Automatic telegraph device



Dec. 7, 1926. 1,609.955

F. Mq KA Y AUTOMATIC TELEGRAPH DEVICE Filed August 2. 1920 5 Sheets-Sheet l.

Fig.2.

In/nion Dec. 7 1926.

'F.. M KAY AUTOMATIC TELEGRAPH .DEVICE' Filed August 2. 1920 5 Sheets-Sheet 4- I Inrn/or.

AUTOMATIC TELEGRAPH DEVICE Filed August 2, 1920 5 Sheets-Sheet s NYE I5. 1 E 1 v Inrn/or Jw/ /iy Patented Dec. 7, 1926.

PATENT OFFICE.

FRANCIS MCKAY,

COMPANY OF CANADA, LIMITED, TRUSTEE,

OF HAMILTON, ONTARIO, CANADA, ASSIGNOR TO MERCANTILE TRUST 0F HAMILTON, ONTARIO, CANADA.

AUTOMATIC TELEGRAPH DEVICE.

Application filed August 2, 1920. Serial No. 400,766.

This invention relates to that class of signalling or telegraphic apparatus which automatically sends, transmits or receives messages through the medium of electrical. devices controlled by a rotatable member called a head. The forms of such device at present in use are handled by skilled operators in order to retain the sending and receiving members in unison so as to ensure a proper tI'Etl'ISIDlSSlOll of the message.

The principal objects of this invention are to provide a form of telegraph instrument particularly adapted for branch circuit use which will enable business houses sending and receiving messages and to provide a simple and compact machine which will be inexpensive to install and maintain and which will not require theservices of askilled telegrapher.

The principal features -of the invention consist in the arrangement of an escapement mechanism which definitely times the operation of the individual sending and receiving members to ensure their operating in unison and in providing means for arresting the receiving mechanism at definite periods and means for releasing said arresting means controlled by the operation of the sending means.

In the drawmgs, Figure 1 is aplan view of the machine, parts thereof being broken away.

Figure 2 is a front elevation ofkthe forward portion of the machine.

Figure 3 is a vertical sectional view through the line'33 of Figure 1.

Figure 4 is-an elevational view taken from the left side of Figure 1.

Figure 5 is a vertical sectional view taken through the line 5-5 of Figure 1.

Figure 6 is .an enlarged vertical sectional view on the line 66 of Figures 1 and 2.

Figure 7 is an enlarged side elevation of the mechanism shown in Figure 6 and the cam devices for operating same.

Figure 8 is an enlarged plan, in part section of the mechanism shown in Figures 6 and 7.

very complicated in construction and operation and require to he Figure 9 is an enlarged elevational view from the front side of the local pole changing switch for sending.

Figure 10 is a side elevational view of the switch shown in Figure 9.

Figure 11 is an enlarged elevational view of the switches for temporarily breaking the connection to the line wire.

Figure 12 is an enlarged elevational view of the mechanism. for starting the escape ment vibrator.

' Figure 13 is a wiring diagram.

It is known in the telegraphing art to use automatic transcribing machines but such machines are of a very complicated nature and being very expensive to install and maintain in service, they are limited to what is known as trunk line work and they therefore cannot be adapted for use on branch services. Such machines require very constant attention on account of their delicacy of adjustment and even with the most careful attention they get out of step and the service is disorganized until they are readjusted. I

In the application of this invention here shown perforated tape such as is used with the present wel known automatic telegraph machines is used, such tape having a series of groups of perforations and each group representing a letter or character previously prepared by well known means. The machine herein illustrated is a compact unit which may be operated to send or receive messages whichever may be desired. v

The machine here shown is formed with a base 1 upon which is mounted a pair of standards 2 and 3 and in these standards is journalled a selector shaft i. Upon one end of the shaft 4 there is mounted a disc 5,

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cam member 11 is also rigidly secured to the stub shaft 9 and spaced a short distance from the crown gear 10. This cam is provided with the cam teeth 12 which are here shown three in number. The crown gear is operated by a mechanism to be hereinafter described to rotate the shaft 9 and wind up the spring 7 and rotative action is imparted to the selector shaft 4 through the spring.

A block 13 is secured to the base 1 forward of the sending disc and a perpendicularly arranged block 14 is rigidly secured to the base block and is provided with a recess in one face thereof in which are slidably arranged the horizontal sending pins a, I), c, d and e, said pins being adapted to slide independently the one of the other. Between the pins d and e is arranged across pin 15 and each pin is recessed in the side to form a limiting slot to allow the pin to move a certain definite distance. A cross pin 16'extends transversely through a similar slot formed in the ins o and I) and another similar pin 17 ts into a similar r slot in the upper side of the pin a.

A fixed synchronizing block 18 rests upon the upper side of the sending pin a. The inward ends of the pins a, Z), c, d and e and the synchronizing block 18 are adapted to extend inwardly toward the side of the sending disc 5 and on the periphery of the sending disc are arranged the pivotal dogs 19, each of which is formed with a evelled surface 20 which engages the butt ends of the sending pins and block 18 on the rotation of the disc.

A rounded edge 21 is arranged on the opposite side of the dog and projects over the other side of the disc 5 and is adapted to operatethe pole changing switch 22, the details of which will be hereinafter more fully described.

Each of the sending pins is formed with a small round end and these small ends extend through a group of holes 23 arranged in a erpendicular plate 24; secured to the base lock 13, the spacing of said holes correspondingto' the spacing of the grouped holes in thetape. A guide plate 25 is secured to the forward side of the plate 24 covering these holes and having its inner face spaced a short distance from the face of the plate 24 and forms the guide for the perforated tape.

A sprocket Wheel 26 extends through aslot 27 in the plate 24 arranged between two of the holes 23. This sprocket is mounted on a shaft .28 supported in suitable bearings on the plate 24.

A locking ratchet wheel'29 is secured to the lower end of the shaft 28 and a ratchet wheel 30 is arranged on its upper end.

Each of the pins a, b, a, d and .e' is pro;'

vided with a laterally extending pin w and to these are connected small spiral springs a further description of other portions of the machine.

A restoring member 31, which is in the form of a bar, is arranged at the front side of the pins as and is pivotally supported at the top and bottom on the pin 32 and is adapted to engage the pins .72 topush the pins a, b, c, d and 6 back clear of the tape.

to allow it to be moved.

The restoring bar is formed with a cog end 33 which is engaged by aswinging member 34 pivotally supported at the bottom of-the block 14 and this swinging member is operated by the teeth 12 of the caln 11 secured on'the shaft 9, a coil spring 35 holding the spur member 36 of the member 34: in contact with the cam consequently as the cam rotates, the teeth 12 rock the member 34,-which in turn operates the restoring bar to return the pins A, B, C, D or E to normal.

A ratchet dog 37 is pivotally mounted on the top end of the member 34 and. is adapted to engage the ratchet wheel 30 to rotate the shaft 28 and operate the sprocket wheel 26 to feed the perforated tape, each movement of the cam turning theratchet wheel one tooth and moving the tape forward a definite distance which corresponds with the space between the vertical rows of perforations.

The pole changing switch 22 is provided with a pivotalarm 50 which has an arc d, e. The arm 50 in-turn engages and actuates the swing member 52 which is provided with electrical contacts 53 and 54 connected respectively with opposite poles of the local batteries55 and 56 (Fig. 13). -;The position of the sending pins is determined by the arrangement of each group of perforations in the tape, that is to say, wherever a perforation in the tape registers with a p n.

'the pin enters the perforation and the butt end is moved out of the path of the dogs 19, consequently as the disc 5 rotates, .the

beveled end 20 0f the dogengages and rides I over the first pin which has not been moved and the portion 21 engages and operates the arm 50 to tilt the contact member 52 which sends a pulse over the line and where a pin has been moved the dog drops into the-depression and the member 50 operates the member 52 to send a pulse of the opposite IJU cleared the sending pins a,

polarity over the line in the same manner as an ordinary key is operated by hand.

The wires 57 and, 58' leading from the pole changing switch 22 are Connected with a pole changer 59 which operates to transmit the impulses to the main line from the main line battery 60.

It will be noted that after the dog 19 has I), c, d and e, it Will be in the down position, that is the position of fart est travel away from the switch 22 and. wiich we will for clearness of description assume to send a minus impulse although its actual polarity is not essential and depends entirely upon the connection' to the battery.

In the further movement of the sending disc 5, the next succeeding'dog 19, before passing over the sending pinsto originate another character or signal, encounters the synchronizing block 18 and is moved to engage the switch 22 and send an impulse of opposite polarity to the line. the function of which is to synchronize the receiving device with the sending in connection with the description of the receiving device.

The mechanism for receiving impulses "sent from one machine to another is here shown arranged at the opposite end of the selector shaft 4 to that on which the sending apparatus is located,'and the sending apparatus of one machine is electricallylconnected with the receiving apparatus of the other machines. It may of course be preferred to use sending and receiving machines not mechanically connected but the present arrangement shows a compact form of a combined sending and receiving machine.

The receiving device is here shown as arranged to operate a series of selector bars a, Z), 0'. (1', e which are slidably arranged in the standards 2 and 3. (Fig. 3.) These bars are spring actuated to slide longitudinally against a stop member 62 arranged adjacent her is pivotally supported and forms a restoring member for returning the bars to their normal position.

a ratchet notch6 l in the end projecting beyond the standard 3 and a plurality of ratchet bolts 65 are supported on the standard 3 and are spring operated to engage the notches.

The receiving disc 61 (Fig. 3) carries piv-. otal dog members 66 here shown three in number.. These dog members each have a tail portion 67 adapted to engage the ratchet. bolts 65 to push them down and release the selector'bars and at the other side of the disc,

these dogs each have an operating lever 68 which passes beneath the T end 69 of the tripping member 70. The tripping member 70 ispivotally supported on a standard 71 device as will be described to the standard 2. This stop mem- Each of the selector bars is formed with and carries an armature 72 which is operated by the magnet 73.

.A receivin polar relay 74 (Fig. 13) is connected with the line wire and operates to direct the current from the local battery 7 5 to the magnet 73 according to the sequence of the pulses received, the lever 7 0 actuating the dog 66 so as to release the appropriate selector bar or bars.

The receiving disc 61 is provided with radial steps 76 (Fig. 4) here shown three .in number, and these stops are adapted to engage a latch member 7 7 which is pivotally supported from the base and is spring hold to engage the stops to hold the disc from rotation. The latch is provided with an armature 78 operated by a magnet 7 9 connected with the local battery through the synchronizing switch 80 which consists of a pair of magnet coils 81 and 82 arranged one at each side of a pair of adjacently arranged armatures adapted to spring together when either is released and i close the circuit through the magnet 7 9.

The synchronizing switch is operated by any change in polarity on the main .line through the action of the polar relay 74, thus ensuring the release of the receiving disc 61 at the proper time as will be fully explained when the sequence of the various steps in the operation is described. b

Upon the release of the disc 61, the selector shaft is rotated by the tension of the such a manner that the operator may conmeet them instantaneously into either the sending or receiving circuit so that the sending machine will control the synchronizing switch on both the sending and receiving machines.

When the dogs 66 have passed clear of the tripping member the disk continues to rotate until the next succeeding stop 7 6 on the disc engages thelatch 77. This arrests the receiving mechanism until the next series of pulses is transmitted.

In the operation of the disc 61 it is necessary to control its movement and to divide such movement into well defined periods. In order to accomplish this an escaptmentv mechanism is provided. On the'shaft 4 is arranged a toothed escapement wheel 84 which is here shown provided with three separate sets of teeth, one set for each dog on the disc 61 andeach set containing three type bar levers and is provided with a capement teeth. These pallets are stepped notched cam 97 arranged on the shaft 4,

teeth. Adjacent to the shaft 4 is arranged .ratchet tooth 101 to engage the notches of the a pivotal arm. 85 supported upon a pivot setype bar levers. The bail is pivotallfi sup cured to the base and adapted to swing transported on the rod 102 and is actuated y the versely in relation to the wheel 84. Upon spring 103 to swing forward and operate the this arm is arranged a pair of escapement type bar levers. The bail.is held however pallets 86 adapted to enter between the esby the lever arm 104 which extends rear-' wardly and is engaged by. a dog 105. The downwardly so that each tooth of the'escapecomb 98 is pivotally supported from a pair ment wheel first .engages the upper pallet of pivotal arms 106 and these 'arms are held and 'as the arm is swung laterally it engages in spring engagement with the cams 107 arthe lower pallet, thus making six points of rimg d' n a Cr s shaft 1 8. p a, dead beat escapement stopping each tooth AS the shaft 108 is rotated the cams release of the escapement twice. the arms 106 which are spring pulled up The arm 85 is provid d with a tur wardly and the combfrees the type bar 87 which is operat d by a a n t oil 88, levers allowing them to swing upwardly Electrical pulses are passed through the coil through the pull of the springs 109 to entczl attract the armature and then release it {1 .1 the S r bars. a d a spring 89 swin th a away f A pin 110 on the shaft 108 kicks the dog the magnet. 105 clear of the bail lever and the bail oper- The electrical pulses to the coil 88 are M385 W 'tYP ill i Selected. regulated by a ibrator which constitutes a 'An fi y the Shaft 108 standard 90,, supporting vibr to i 91 gages the bail lever and returns it to normal. This vibrator arm carries a contact 92 which A shaft 112 arranged at right angles to the co-operates with a st ti a nt t 93, shaft- 4 intersects the end of the shaft 108 A bar 9413 slidably u p t d i a b k t and a driving connection is established 95 secured to the base and this bar is prothrough thcbevel gears 11 and 1 e vided h a hooked e d 9 engaging th shaft 112 also carries a pinion 115 which c0- vibrator arm 91. (See Figures. 1 and 12.) operates with the crown gear 10 to wind up The other end of the bar 94 ng g a thespring 7 and adjacent to the pinion 115 is arranged a cam 116. This cam operates there beingthree notches in the. cam corresponding with the number of sets of teeth Storing arm on the escapement Th not h s are so A collar 118 is slidable on the shaft 112 ranged that h th d f th b 94 and rotates therewith. One end of this col- I gaging the cam enters a notch the hooked l i f m With a tooth 119 and the tact in the circuit connected ment, c011, giving the necessary stgp motion a typewriting machine for-transcribing'the .messages,.though any suitable form of signal The movement by the escapemcnt is sufficient to carry the t0 operatlng dog over th fi t h t bolts to the teeth 122. This movement lifts the tooth such of theinas are to be released. Immediately upon the dog 66 clearing the selector 'theforward end.- a Gli end 96 will release the vibrator arm and start jacent'bearing is provided with a notch 120 it vibrating through the tension of its own into Which the t oth 119 is adapted to fi spring. The opposite endof the collar is provided 1 The vibrator thus makes and'breaks 111 with a plurality of clutch teeth 121 adapted with the escape-. to engage a correspondingly notched member 122.

A bell crank arm 123 is operatively conof the shaft as governed nected with the collar to slide it on the shaft bring the teeth 121 into engagement with to thev shaft.

119. out of the notch 120 and ensures the clutch teeth remaining in contact for one "revolution of the shaft 112. latches the escapement will by reason of the- The bell crank arm is operated by means blank spaces be released from the control of a magnet coil 124. This magnet coil of the pallets and the disc 'will revolve receives its current througha. switch member rapidly until brought to rest by the latch 77 125, (see Figs. 3 and 11) which is operated engaging the stop 76 in position to receive by a earn 126 arranged on the receiver end the next series of pulses; of the shaft 4:. This cam closes the switch The device is here illustrated as applied to effect the release, of the five v selector bars or the last pulse of each series and the clearing of the latch bolts by the operating dogs, thus or indicating mechanism may be used in 0011- throwing the printing mechanism'into opnection' with the selectors. eration. Y

In the form shown type bar levers 63 (Fig.- hen, one complete revolution of the 5) are supported ip a guide comb 98 and each printing mechanism is effected thetooth 119 of these levers are formed with a notch 99 at drops into the notch 120 'and releases the clutch.

A switch 127 is arranged on the sending A bail 100 extends across the top of the an arm 117 which is connected with the reimmediately following the transmission of end of the shaft 4 operated by a cam 128 on said shaft. This switch is arranged in the local sendmg circuit and cuts out the battery connected with the pole changer, that is to p say, it cuts out the local battery which oper ates the sending pole changer. This cut-out occurs immediately following thecommcncement of operation of the printing mechanism. and ensures the continuance of the printing operation without interruption and prevents the sending of further pulses to line until the selector bars have been restored to their normal positions by the operation of the member 62.

In the operation of this mechanism, each installation is preferably provided with a suitable form of signal to enable one operator to notify another that he desires to send a message. The operator so called will then move his switch 83 to the receiving position while the sending operator will-move his to the sending position. The movement of the switch 83 at the receiving end to the position shown in the drawings, connects the synchronizing switch coil 81 in parallel with the selector coil 73 and concurrently the coil 82 of the synchronizing switch. is connected with the opposite circuit controlled by the receiving polar relay 74. The receiving operator then moves the tongue of his polar relay 74 to apredetermined position which according to the wiring diagram would be the position against the right hand stop which for convenience is designated the minus side.

As the sending disc comes into operation one of the dogs 19 on the disc 5 willengage the block 18 or the sending pins a, Z), c, d and e and a pulse will be transmitted over the main line to the receiving relay 7 1 of the other machine. The operation of the relay 7 1 de-energizes the coil 82 and the synchronizing switch 80! closes momentarily and sends a pulse through the coil 79 which operates the latch 77 simultaneously in both the sending and receiving machines and the shaft 4 of both machines are released and rotate, their movement being positively controlled by their respective escapement mechanisms and both machines move in perfect unison.

-Prior to starting the'machine, the per forated tape is inserted into the sending machine to bring the first line of perforations into line with the sending pins (1, b,

' c, d, and e and according to the arrangementfof the perforations certain of these pins will pass through the tape and when the latch 77 is released the disc 5 rotates and one of the dogs 19 operates the pole changing switch 22 in themanner described, thereby sending either' plus or minus pulses over the line. These pulses being transmitted to the main line through the sending polar relay 59.

The pulses received in the receiving polar relay 74: are transmitted to the selector coil 73 and synchronizing coil 81 and the triping armature is thus operated to operate the dog 66 carried by the disc 61 on the re ceiving machine. This operates in unison with the dog on the sending disc and releases certain of the latch bolts 65, causing the operation of certain of the selector bars a, Z), a", d or-e Immediately the dog 66 passes over the last of the latch bolts 65, the cam 126 on the selector shaft 4 closes the switch 125. This closes an electric circuit to the magnet coil 124 operating the bell crank arm 123 and throws the clutch 122 into operation.

As the pulse is but momentary, it is necessary to provide means to maintain the clutch in contact and the tooth 119 being lifted out of the notch 120 holds the clutch in contact for a complete revolution. The shaft C is driven by a suitable motor, which is not shown, and operates the shaft 112 through the clutch. Concurrently, this operates the transverse shaft 108 and upon the rotation of this shaft the cams 107 release the arms 10'6, upwardly to clear the type bar levers allowing the selected lever to move upwardly to engage the 'bail. 'The bail is then released by the operation of the dog105 op-v erated by the pin 110 and t-uatedbail then functions to operate the type bar and print the selected letter, a suitable carriage D being arranged on the machine.

Concurrently with this operation the cam moving the comb 98 the spring ac-' storing member 02 inwardly and restore the selector bars to their normal position in engagement with the ratchet bolts. 7

The driving shaft 112 operating through the pinion 115 operates the crown gear concurrent with the operation of the transverse shaft 108 and the spring 7 is rewound, the shaft 4 having been arrested in its rotative movement by the latch 77 engaging the next succeeding stop .on the disc 61.

Concurrent with the rotation of the crown gear the cam 11 on the stub shaft 9 operates the 'oivotal member 34 to swing forwardly. This movement operates the restoring bar 31 to restore the pins 05, b, c, d or e to their normal positions. Concurrently the ratchet dog 37 engages the ratchet wheel 'on the upper end of the shaft 28 rotating it the distance of one tooth and turning the sprocket wheel 26'to feed the tapeto bring the next series of holes opposite to the sending pins."

The switch 127 of the sending end of the shaft 4 breaks the local circuit on the sending end so that no pulses can be sent to the main line while the printing mechanism is in operation. This switch automatically operate automatically according to the per:

' foration of the tape and transmit pulses to the main line' which are picked up by the receiving mechanism which does the selecting and printing.

After each series of perforations passes from the zone of the points of the sending pins, it is important and essential to the proper operation of the device that there e a reversal of the polarity on the main line afi'ectingboth synchronizing coils on the sending and' receivin machines in order that the synchronizing atch will be operated at the proper time. This is effected by means of the bar 18 arranged above the sending pins which will always engage the dog of thedisc 5 before it comes into the path of the pins (1,6, 0, d, e and effects a change of polarity to release the latch of the receiving disc.

When the synchronizing latch is released the shaft 4. rotates under the influence of the spring 7 but its motion is definitely restricted by the dead beat escapement mechanism described which corresponds exactly with the movement of the dog 66. The escapement mechanism is brought into operation by means of the cam .97 on the selector shaft 4 operating the bar 94 to release the vibrator arm.

apparatus such as described is of extremely small compass, being about the size of an ordinary typewriter. It is a self-contained unit and can be handled very easily. It is inexpensive and can be installed almost anywhere a telegraph instrument is required and it will transmit directly without the services of a skilled operator any messages sent from any place.

It Will be noted that the sending and IG-I ceiving machines automatically synchronize fore every series of pulses, that is to say, the machines are automatically stopped by the latches 77 after the transmission .of the necessary pulses to form one letter, signal. or character and there is a period of rest between the stopping to allow the printing mechanism to act. Then the next series of pulses is sent. The intervening period will allow for any variation in the speed of the operating motors, consequently the machine will continue to operate practically indefinitely without attention.

All the operating mechanisms are -operated b simple electromagnets and the Whole evice Is free from electrical complications, all circuits being extremely simple and easily followed.

The machine herein described issmall and very compact in form, being about the size of an ordinary typewriter and constitutes a combination sending and receiving machine which may be operated without the necessity of expert training and on account of these special conditions of universal usen most desirable structure is produced.

\Vhat I claim as my invention is 1. In a telegraph machine, a rotatable element, means for controlling the rotationof said elements, springs means for rotating said element, means for periodically rewinding said spring to maintain it at a uniform torsion, and a selective mechanism operating in mechanical co-operation with said rotatable element.

2. In a telegraph machine, an intermittently operating rotatable element, means for controlling the operation of said element spring means for rotating said element, a selective mechanism operating in mechanical cooperation with said rotatable element, and

means for intermittently applying torsion to said spring during its periods of rest.

3. In a telegraph machine, an intermittently operating rotatable element, means for controlling the operation of said element,

spring means for rotating said element, a

selective mechanism operating in mechanical cooperation with said rotatable element, and means operating during the periods of rest of said rotatable element and applying torsion to the spring equivalent to the torsion expended by the spring in the periods of movement of the rotatable element.

4. In a telegraph machine, a rotatable element, a selective mechanism operating in mechanical cooperation with said rotatable element, means for periodically arresting the movement of said element, means for governing the speed of movement of. said element, spring means for rotating said element, and means for periodically rewinding said spring to maintain it at a uniform tension.

'5. In a telegraph machine, a rotatable element, a selective mechanism operating in.me-- chanical cooperation with said rotatable element, electrically controlled means for arresting the movement of said element, means for governing the speed of movement ofsaid element, spring means for rotating said element, and means for periodicallyrewinding said spring-to maintain it at a uniform tension. J i. 1

6. In a telegraph machine,-an intermittently operating rotatable element, a selective mechanism operating in mechanical cooperation.-with said rotatable element, means for controlling the operation of said element, a helical spring having one end-secured to said element, a member secured to the other end of said spring and rotatable independently of-the aforesaid member,'and means for opment, spring means for rotating said element at a uniform speed and torque, means carried by said rotatable element for operating said transmitting means, a perforated mes sage tape, and means controlled by said ,tape adapted to co-operate with the means carried by said rotatable element for operating the transmitting means.

8. In a telegraph machine, means for transmitting electric pulses, a rotatable element arranged adjacent to said transmitting means, movable members carried by said rotatable element adapted to be moved to engage or-to pass said transmitting means, means arranged adjacent to said rotatable element adapted to engage said movable members carried by the rotatable element, and a perforated message tape controlling the movement of the latter movable members.

9. In a telegraph machine, means for transmitting electric pulses, a rotatable element arranged adjacent to said transmitting means, pivotal dogs-mounted on said rotatable element and adapted to swing trans versely thereof, a plurality of pins arranged in the path of said pivotal dogs adapted to engage and move them to operate the transmitting means, means for moving said pins out of-the path of said dogs, and a perforated message tape controlling the movement of said pins.

10. In an automatic telegraph device the combination with a perforated message tape having spaced groups of perforations, a plurality of pins adapted to enter the ends of said perforations in said tape, said pins being parallelly arranged and slidable in relation to each other, a rotatable member arranged adjacent to said pins, a pivotal member carried by saidrotatable member across said pins and adapted to be swung on its pivot according to the location of said pinsas defined by the perforated tape, a pole changing switch adapted to be operated y said pivotal member in-itspassage over said pins and adapted to send pulses to the line wire indicating certain characters.

11. In an automatic telegraph device the combination with a perforated message tape havin spaced groups of perforations, a plurality of pinsiadapted to enter the ends of said perforations 1n saidtape, said pins.

being parallelly arranged and slidable in relation to each other, a fixed block arranged at. the initial end of the row of pins, a retatable disc mounted adjacent to said ins, members carried by said rotatable disca apted to be engaged by said block or saidpins "when they are not entered into perforations in the tape, and a pole-changing switch adapted to be operated by the members ear ried by said disc to send (pulses to the line wire.

12. A telegraph transmitter, comprising a the other,

rotatable member spring means for rotating said member, means for regulating the speed of rotation of said member, means for periodically arresting said member,'a guide arranged adjacent to the periphery of said rotatable member having a recess therein, a plurality of sending pins slid-ably arranged in said recess in said guide and adapted to slide independently the one of the other, pivotal dogs mounted on the periphery of said rotatable member and having a spur projection adapted to engage said sending pins, a pole changing switch having a shoe arranged in the opposite side of said rotatable member and adapted to be engaged by said pivotal dogs when in contact with said sending pins, means for moving said sending pins out of the path of said dogs to allow said dogs to move without operating the switch, and a perforated tape adapted to control the movement of said pins.

13. A telegraph transmitter, comprising a rotatable member, spring means for rotating said member, means for regulating the speed of rotation or said member, means for periodically arresting said member, a guide arranged adjacent to the periphery of said rotatable member having a recess therein, a plurality of sending pins slidably arranged in said recess in said guide and adapted to slide independently the one of the other, a fixed synchronizing block arranged at one end of the row of pins, pivotal dogs mounted on said rotatable member having spur ends adapted to first engage said synchronizing block and to be swung thereby on their pivots and to then pass over the several sending pins or through the spaces vacated by said pins, a pole changing switch arranged adjacent to said sending pins having a shoe arranged parallel with the face of the pins and adapted to be engaged by said dogs when said dogs engage the synchronizing block or the sending pins and to remain at rest where a sending pin is withdrawn from the path of movement of the do.

14. A telegraph transmitter, comprising a rotatable member, spring means for rotating said member, means for regulating the speed of rotation of said member, means for periodically arresting said 'member, a guide arranged adj acent to the periphery 'of said rotatable member having a recess therein, a plurality of sending pins slidably arrangedin said recess in said guide and adapted to slide independently individual sprin said rotatable member, a perforated tape governing the movement of said pins, means 1 for limiting the movement of said pins,

the one of means fordrawing'said pins longitudina 1y away from' pins and to be moved transversely by said pins, and a pulse sending member adapted to be engaged by said dogs when said dogs.

are engaged by said pins.

15. In a. telegraph machine, a controlled rotatable element, spring means for rotating said element, means for periodicall arresting said element, means for app ying torsion to said spring during the periods of rest of the rotatable element, means carried by said rotatable element for effectin the transmissioniof pulses, means arrange adjacent to said rotatable element adapted to control said pulse sending means, a perforated tape governing said controlling means, and means actuated by the means for applying torsion to the spring for moving said tape at defined intervals.

16. In a telegraph machine, a controlled rotatable element, spring means for rotatresting said element, means for applying torsion to said spring during the periods of rest of the rotatable element, means carried by said rotatable element for effecting the,

transmission of pulses, means arranged adjacent to said rotatable element adapted to control said pulse sending means, a perforated tape governing said controlling means, a sprocket wheel engaging periomg said element, means for periodically arrations in the tape, a shaft supporting said sprocket wheel, a, ratchet wheel on said shaft a dog adapted to engage said ratchet Wheei, a pivoted member supporting said do and means carried bythe torsion applying means for swinging said pivotal member to operate said dog.

17. In a telegraph machine, a controlled rotatable element, spring means for rotat-' ing said element, means for periodically arresting said element, means for applying torsion to said spring during the periods of rest of therotatable element, means carried by said rotatable element for efi'ecting the transmission of pulses, ,pins arranged adjacent to said rotatable element adapted to control. said pulse sending means, a perforated tape governing said controlling FRANCIS MoKAY 

